feat: support leaf bundles for blog posts, refactor header images

themes/hugo-sustain/layouts/_default/single.html

@@ -40,12 +40,7 @@
         <div class="panel panel-default">
           <div class="panel-body">
             <div class="blogpost">
-              {{ if isset .Params "headerimage" }}
-                <div class="header-image">
-                  <img src="/img/{{ .Params.headerImage }}" />
-                  <p>{{ with .Params.headercredits }}{{ . | markdownify }}{{ end }}</p>
-                </div>
-              {{ end }}
+              {{ partial "blog/headerimage" . }}
               {{ .Content }}
               <!-- only show related posts if param is true, or if it's not a page -->
               {{ if or (eq .Params.related true) (ne .Params.page true) }}
@@ -85,6 +80,6 @@
 
     <!-- Matomo -->
     {{ partial "matomo" . }}
-    
+
   </body>
 </html>

themes/hugo-sustain/layouts/partials/blog/headerimage.html

@@ -0,0 +1,15 @@
+{{- $page := . -}}
+{{- with $page.Params.headerimage }}
+  <div class="header-image">
+    {{- if eq $page.BundleType "leaf" }}
+      {{- with $page.Resources.GetMatch .src }}
+        <img src="{{ .RelPermalink }}" />
+      {{- end }}
+    {{- else }}
+      {{- with resources.GetMatch (printf "**/%s" .src) }}
+        <img src="{{ .RelPermalink }}" />
+      {{- end }}
+    {{- end }}
+    {{- with .text }}<p>{{ . | markdownify }}</p>{{ end }}
+  </div>
+{{- end }}